Can NFC track items through a supply chain?
It records checkpoints where somebody taps, which is not tracking. Continuous visibility needs a technology that reads items as they pass, without a person deciding to do it. NFC gives you the points where people already stop, and nothing between them.
Checkpoints, not tracking
A tag is passive and reports nothing. Every record in an NFC deployment exists because a person went to an item and tapped it.
So what you get is a series of checkpoints: goods in, a quality inspection, a handover, a delivery signature. Points where somebody was already stopping.
Between those points there is nothing, and no amount of tags changes that. The gaps are where the questions usually are.
Calling that tracking sets an expectation the deployment cannot meet, and it is how these projects lose their sponsors.
What tracking actually needs
Reading items as they pass, in bulk, without anyone deciding to. That means a different radio technology at a different frequency, with portal readers at doorways and gates.
It reads many items at once, at metres rather than centimetres, and it produces the continuous picture people mean by tracking.
It also costs more in infrastructure, needs tuning for the goods and the environment, and does not work on a phone.
If the requirement is genuinely continuous visibility, that is the conversation to have, and having it early is cheaper than discovering it after a pilot.
Where NFC is genuinely good
The last point, where a person handles an individual item and needs certainty: which unit, which batch, which serial.
Verification at a specific moment: confirming a component is the right one before fitting it, checking a seal before accepting a delivery.
Anything reaching the end customer, since they already carry a reader and no other technology in the chain does.
And documentation attached to an item, where a tap replaces finding a paper record for a specific unit.
Using both
Combined labels exist, carrying an NFC chip and a UHF chip with their own antennas in one body. They are larger, dearer and available in fewer forms.
Two separate labels on the same item is often simpler, and they do not interfere because they work at very different frequencies.
Either way, the two produce independent identifiers and your system has to know they describe the same object. That reconciliation is the part most often underestimated.
Start by writing down which questions need continuous visibility and which need certainty at a point. The answer usually assigns the technologies for you.
Frequently asked questions
Can NFC tell me where an item is?
Only where it was last tapped. A tag reports nothing on its own, so there is no position between checkpoints.
Is UHF just longer range NFC?
They are different technologies at different frequencies with different readers. UHF reads many items at a distance and does not work on a phone.
Can one label carry both?
Combined labels exist, with two chips and two antennas. They are larger and dearer, and two separate labels is often simpler.
Where does NFC fit best in a chain?
At the points where a person handles one item and needs certainty, and at the consumer end where everyone already carries a reader.